package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.*;
import com.sky.entity.Category;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.EmployeeMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;
    /**
     * 分类分页查询
     *
     * @param categoryPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
        Page<Category> page = categoryMapper.pageQuery(categoryPageQueryDTO);
        long total = page.getTotal();
        List<Category> records = page.getResult();
        return new PageResult(total, records);
    }

    /**
     * 新增菜品
     * @param categoryDTO
     */
    @Override
    public void addNewCategory(CategoryDTO categoryDTO) {
        categoryMapper.addNewCategory(categoryDTO);
    }

    /**
     * 修改分类
     * @param categoryDTO
     */
    @Override
    public void updateCategory(CategoryDTO categoryDTO) {
        Category category=new Category();
        BeanUtils.copyProperties(categoryDTO,category);
//        category.setUpdateTime(LocalDateTime.now());
        categoryMapper.updateCategory(category);
    }

    @Override
    public void StartOrStop(Integer status, Long id) {

        Category category = Category.builder()
                .id(id)
                .status(status)
//                .updateTime(LocalDateTime.now())
                .build();
        categoryMapper.updateCategory(category);
    }

    @Override
    public void deleteById(Long id) {
        //查询当前分类是否关联了菜品
        Integer count = dishMapper.countByCategoryId(id);
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        //查询当前分类是否关联了套餐
         count = setmealMapper.countByCategoryId(id);
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.deleteById(id);
    }
    /**
     * 根据类型查询分类
     * @return
     */
    @Override
    public List<Category> categoryQuery(Integer type) {
        List<Category> categoryList=categoryMapper.categoryQuery(type);
        return categoryList;
    }



}
